uvm_fault(0xffffffff8250c1f8, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at sbdrop+0x1f9: movl 0x18(%r15),%r13d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff8250c1f8, 0xfffffd0000000018, 0, 1) -> e sbdrop(ffff800016b59fd8,ffff800016b5a060,a42) at sbdrop+0x1f9 sys/kern/uipc_socket2.c:963 end trace frame: 0xffff800016b59f80, count: 0 ddb> trace sbdrop(ffff800016b59fd8,ffff800016b5a060,a42) at sbdrop+0x1f9 sys/kern/uipc_socket2.c:963 sbflush(ffff800016b59fd8,ffff800016b5a060) at sbflush+0x93 sys/kern/uipc_socket2.c:932 sbrelease(ffff800016b59fd8,ffff800016b5a060) at sbrelease+0x2e sys/kern/uipc_socket2.c:526 sorflush(fffffd8036fb2780) at sorflush+0x13d sys/kern/uipc_socket.c:1105 sofree(fffffd8036fb2780,42) at sofree+0x147 sys/kern/uipc_socket.c:241 soclose(fffffd8036fb2780,0) at soclose+0x268 sys/kern/uipc_socket.c:313 soo_close(fffffd803d81b018,ffff800016b48c70) at soo_close+0x40 fdrop(fffffd803d81b018,ffff800016b48c70) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd803d81b018,ffff800016b48c70) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff800016b48c70) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff800016b48c70,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800016b48c70,ffff800016b5a420,ffff800016b5a470) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800016b5a4f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe13f0, count: -14 ddb> show registers rdi 0 rsi 0x44e rbp 0xffff800016b59f30 rbx 0xfffffd802dd71f00 rdx 0xffff800016b59d70 rcx 0x1000 __ALIGN_SIZE rax 0 r8 0 r9 0x3 r10 0x97b679b590a06895 r11 0x955c2635907be625 r12 0x44e r13 0xc00 r14 0xffff800016b5a060 r15 0xfffffd0000000000 rip 0xffffffff817214b9 sbdrop+0x1f9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800016b59ed0 ss 0x10 sbdrop+0x1f9: movl 0x18(%r15),%r13d ddb> show proc PROC (syz-executor.1) pid=108332 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff800016b48780,0xffff800016b482a0 process=0xffff8000ffff7450 user=0xffff800016b55000, vmspace=0xfffffd803f011ee0 estcpu=23, cpticks=2, pctcpu=0.11 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37583 97080 22293 0 2 0 syz-executor.0 37583 85815 22293 0 3 0x4000080 fsleep syz-executor.0 37583 40148 22293 0 3 0x4000080 fsleep syz-executor.0 31633 371971 0 0 3 0x14200 bored sosplice 76798 444396 78431 0 3 0x82 nanosleep syz-executor.1 22293 295721 78431 0 3 0x82 nanosleep syz-executor.0 78431 442528 58657 0 3 0x82 thrsleep syz-fuzzer 78431 175538 58657 0 3 0x4000082 thrsleep syz-fuzzer 78431 444489 58657 0 3 0x4000082 thrsleep syz-fuzzer 78431 511512 58657 0 3 0x4000082 thrsleep syz-fuzzer 78431 419785 58657 0 3 0x4000082 thrsleep syz-fuzzer 78431 15623 58657 0 3 0x4000082 thrsleep syz-fuzzer 78431 107443 58657 0 3 0x4000082 thrsleep syz-fuzzer 78431 249444 58657 0 3 0x4000082 kqread syz-fuzzer 58657 473787 60836 0 3 0x10008a pause ksh 60836 200900 70260 0 3 0x92 select sshd 61292 221397 1 0 3 0x100083 ttyin getty 70260 3405 1 0 3 0x80 select sshd 96902 91770 47778 73 3 0x100090 kqread syslogd 47778 173880 1 0 3 0x100082 netio syslogd 97335 463416 1 77 3 0x100090 poll dhclient 73440 439967 1 0 3 0x80 poll dhclient 20707 97694 0 0 2 0x14200 zerothread 73577 159735 0 0 3 0x14200 aiodoned aiodoned 6009 165674 0 0 3 0x14200 syncer update 36333 428551 0 0 3 0x14200 cleaner cleaner 5491 517096 0 0 3 0x14200 reaper reaper 17716 227066 0 0 3 0x14200 pgdaemon pagedaemon 69115 189053 0 0 3 0x14200 bored crynlk 13695 169183 0 0 3 0x14200 bored crypto 75141 219714 0 0 3 0x40014200 acpi0 acpi0 26102 511205 0 0 3 0x14200 bored softnet 522 95097 0 0 3 0x14200 bored systqmp 1343 234112 0 0 3 0x14200 bored systq 22331 219356 0 0 3 0x40014200 bored softclock 24384 417646 0 0 3 0x40014200 idle0 82081 522816 0 0 3 0x14200 bored smr 1 192916 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9507 6661K 7494K 78643K 11902 0 pcb 13 8K 8K 78643K 66 0 rtable 101 5K 5K 78643K 280 0 ifaddr 64 13K 13K 78643K 85 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 27 0 iov 0 0K 16K 78643K 34 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1529 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 57 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 219 0 sigio 0 0K 0K 78643K 7 0 proc 48 38K 63K 78643K 383 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 26 0 in_multi 48 2K 2K 78643K 67 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 48 212K 212K 78643K 48 0 exec 0 0K 1K 78643K 195 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 117 22K 27K 78643K 1443 0 UVM aobj 11 2K 3K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 42 0 NDP 10 0K 0K 78643K 19 0 temp 126 3014K 3653K 78643K 15251 0 kqueue 0 0K 0K 78643K 2 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 3 1 0 1 1 0 8 0 rtpcb 80 43 0 36 1 0 1 1 0 8 0 rtentry 112 61 0 22 2 0 2 2 0 8 0 unpcb 120 178 0 167 1 0 1 1 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 93 0 93 2 2 0 1 0 8 0 tcpcb 544 76 0 72 1 0 1 1 0 8 0 ipq 40 3 0 3 1 0 1 1 0 8 1 ipqe 40 135 0 135 1 0 1 1 0 8 1 inpcb 280 431 0 424 2 0 2 2 0 8 1 nd6 48 7 0 4 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 ppxss 1128 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 351 0 129 16 0 16 16 0 8 1 art_table 32 352 0 129 3 0 3 3 0 8 0 art_node 16 60 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 20 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 55 0 45 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1703 0 305 46 0 46 46 0 8 0 ffsino 240 1703 0 305 83 0 83 83 0 8 0 nchpl 144 2200 0 588 60 0 60 60 0 8 0 uvmvnodes 72 2022 0 0 37 0 37 37 0 8 0 vnodes 208 2022 0 0 107 0 107 107 0 8 0 namei 1024 6008 0 6008 1 0 1 1 0 8 1 scxspl 192 6195 0 6195 8 7 1 7 0 8 1 plimitpl 152 32 0 25 1 0 1 1 0 8 0 sigapl 432 390 0 376 2 0 2 2 0 8 0 futexpl 56 6592 0 6590 1 0 1 1 0 8 0 knotepl 112 109 0 90 1 0 1 1 0 8 0 kqueuepl 104 151 0 138 1 0 1 1 0 8 0 pipepl 128 240 0 221 1 0 1 1 0 8 0 fdescpl 424 391 0 376 2 0 2 2 0 8 0 filepl 120 3007 0 2882 4 0 4 4 0 8 0 lockfpl 104 77 0 73 1 0 1 1 0 8 0 lockfspl 48 28 0 26 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 241 0 234 1 0 1 1 0 8 0 zombiepl 144 377 0 376 1 0 1 1 0 8 0 processpl 864 406 0 376 4 0 4 4 0 8 0 procpl 632 721 0 682 4 0 4 4 0 8 0 sosppl 128 8 0 8 1 0 1 1 0 8 1 sockpl 384 656 0 630 4 0 4 4 0 8 1 mcl64k 65536 29 0 29 1 0 1 1 0 8 1 mcl16k 16384 5 0 5 1 0 1 1 0 8 1 mcl12k 12288 11 0 11 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 11 0 10 1 0 1 1 0 8 0 mcl4k 4096 34 0 34 1 0 1 1 0 8 1 mcl2k 2048 68385 0 68338 17 10 7 14 0 8 0 mtagpl 80 23 0 4 2 1 1 1 0 8 0 mbufpl 256 110312 0 110076 22 5 17 19 0 8 0 bufpl 280 6594 0 1712 349 0 349 349 0 8 0 anonpl 16 61416 0 40897 90 7 83 87 0 62 0 amapchunkpl 152 2041 0 1879 15 4 11 11 0 158 4 amappl16 192 2335 0 1194 58 0 58 58 0 8 0 amappl15 184 145 0 138 1 0 1 1 0 8 0 amappl14 176 26 0 23 1 0 1 1 0 8 0 amappl12 160 102 0 100 2 1 1 1 0 8 0 amappl11 152 45 0 34 1 0 1 1 0 8 0 amappl10 144 16 0 14 1 0 1 1 0 8 0 amappl9 136 559 0 555 1 0 1 1 0 8 0 amappl8 128 121 0 91 1 0 1 1 0 8 0 amappl7 120 99 0 86 1 0 1 1 0 8 0 amappl6 112 54 0 47 1 0 1 1 0 8 0 amappl5 104 235 0 224 1 0 1 1 0 8 0 amappl4 96 606 0 577 1 0 1 1 0 8 0 amappl3 88 131 0 123 1 0 1 1 0 8 0 amappl2 80 2390 0 2310 3 1 2 3 0 8 0 amappl1 72 16813 0 16358 25 16 9 20 0 8 0 amappl 80 963 0 913 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 391 0 376 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 391 0 376 1 0 1 1 0 8 0 vmmpekpl 168 6761 0 6734 2 0 2 2 0 8 0 vmmpepl 168 55178 0 52794 139 19 120 135 0 357 16 vmsppl 272 390 0 376 2 1 1 2 0 8 0 pdppl 4096 788 0 752 6 1 5 6 0 8 0 pvpl 32 186926 0 162804 204 7 197 204 0 265 2 pmappl 200 390 0 376 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 158 0 19 4 0 4 4 0 8 0